ArticleFrontiers in plant science2014
Field and controlled environment measurements show strong seasonal acclimation in photosynthesis and respiration potential in boreal Scots pine.
Article in Frontiers in plant science, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 86 citations in OpenAlex.
- Field integration of shoot gas-exchange and leaf chlorophyll fluorescence measurements to study the long-term regulation of photosynthesis in situ.Tree physiology · 2025Article
- Evaluating photosynthetic models and their potency in assessing plant responses to changing oxygen concentrations: a comparative analysis ofFrontiers in plant science · 2025Article
- Partitioning seasonal stem carbon dioxide efflux into stem respiration, bark photosynthesis, and transport-related flux in Scots pine.Journal of experimental botany · 2024Article
- Accounting for photosystem I photoinhibition sheds new light on seasonal acclimation strategies of boreal conifers.Journal of experimental botany · 2024Article
- Intercomparison of methods to estimate gross primary production based on COBiogeosciences (Online) · 2022Article
- Specific thylakoid protein phosphorylations are prerequisites for overwintering of Norway spruce (Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Weaker Light Response, Lower Stomatal Conductance and Structural Changes in Old Boreal Conifers Implied by a Bayesian Hierarchical Model.Frontiers in plant science · 2020Article
- Spatial Variation of Leaf Optical Properties in a Boreal Forest Is Influenced by Species and Light Environment.Frontiers in plant science · 2017Article
- Increased Needle Nitrogen Contents Did Not Improve Shoot Photosynthetic Performance of Mature Nitrogen-Poor Scots Pine Trees.Frontiers in plant science · 2016Article
- Onset of photosynthesis in spring speeds up monoterpene synthesis and leads to emission bursts.Plant, cell & environment · 2015Article
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6 authors at 1 institution in 1 country.
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Abstract
Understanding the seasonality of photosynthesis in boreal evergreen trees and its control by the environment requires separation of the instantaneous and slow responses, as well as the dynamics of light reactions, carbon reactions, and respiration. We determined the seasonality of photosynthetic light response and respiration parameters of Scots pine (Pinus sylvestris L.) in the field in southern Finland and in controlled laboratory conditions. CO2 exchange and chlorophyll fluorescence were measured in the field using a continuously operated automated chamber setup and fluorescence monitoring systems. We also carried out monthly measurements of photosynthetic light, CO2 and temperature responses in standard conditions with a portable IRGA and fluorometer instrument. The field and response measurements indicated strong seasonal variability in the state of the photosynthetic machinery with a deep downregulation during winter. Despite the downregulation, the photosynthetic machinery retained a significant capacity during winter, which was not visible in the field measurements. Light-saturated photosynthesis (P sat) and the initial slope of the photosynthetic light response (α) obtained in standard conditions were up to 20% of their respective summertime values. Respiration also showed seasonal acclimation with peak values of respiration in standard temperature in spring and decline in autumn. Spring recovery of all photosynthetic parameters could be predicted with temperature history. On the other hand, the operating quantum yield of photosystem II and the initial slope of photosynthetic light response stayed almost at the summertime level until late autumn while at the same time P sat decreased following the prevailing temperature. Comparison of photosynthetic parameters with the environmental drivers suggests that light and minimum temperature are also decisive factors in the seasonal acclimation of photosynthesis in boreal evergreen trees.
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